Spanning four decades (1967--2006), the eleven structures in this exhibition provide a representative sampling of Sol LeWitt's lifelong interrogation of three-dimensional form. Focusing on elementary geometric shapes, in particular the square and the cube, LeWitt was able to reduce art to its essentials so that he could communicated with neutrality ideas about scale and process. Working within this reduced vocabulary he was able to create an impressive array of structures that experimented with modular progressions, variations in proportion, and seriality.